when kay asked, are birth control pills deductible, she replied, "dear kay, only if they don't work." "dear abby" became a trusted household name, read by tens of millions in hundreds of newspapers worldwide. >> i get about 300 letters a day that sound just like this one. dear abby, i'm a girl of 14 and i like a boy of 15. >> reporter: even presidents took note of her popularity. >> abby, thank you. >> thank you, mr. president. >> she wasn't a doctor, physician. she was just a woman from iowa who had great, good common sense. >> reporter: phillips was also on the radio for 12 years, an author to six books. famous for one-liners. "dear abby, between you and me, i think the people who write to you are either morons or they're just plain stupid." signed henry. she replied, "dear henry, which are you?" some confused her with her twin sister, ann landers, also an advice columnist.